Figure 6.

Effect of Rubisco activation on the relationship between the rates of Pn measured in cotton leaves and predicted from the kinetics of Rubisco. Pn and Rubisco activation were measured in leaves exposed to various combinations of leaf temperature (28°C or higher), Ci (280 μbar or higher), and O₂ level (210 and 10 mbar). The kinetic properties of Rubisco were used to predict the rate of Pn under each condition either with (●) or without (□) adjustment for the activation state of Rubisco. The line indicates a 1:1 relationship between the predicted and measured rates.